5v crimp metal roofing?

I am talking to a roofing contractor about putting a metal roof on my house. He is talking about the 5v crimp. Can anyone give me some info on this stuff, it seems it only comes in 26 gauge and 12in. on center for the panels. Im afraid with my research that could lead to what they call oil canning where the metal starts to warp in spots and i surely dont want.Also i live on the florida coast and want the best bang for my buck especially being in hurricane territory i need something strong.

5v crimp metal roofing?

Too wide of a panel being installed.
12" is the narrowest typical panel width and offers the least amount of warping look or oil canning.

Too much horizontal pressure being applied from the fastener clips being screwed down too tightly.
Best screws have a neoprene gasketed washer to avoid over torquing. A proper feel for fastener hold down without over torquing the fasteners is even more desireable.

The orientation of the sun in regards to the subjective panels in question.
This can change the visual affects depending on the time of the day and the degree of elevation of the sun in the horizon.

The type and color of the metal being used.
Darker colors show the oil canning more readily. Also, anodized aluminum tends to telegraph the anomally more significantly than galvanized, galvalume, or a heavier ga of Aluminum, as in .040 stock.

5v crimp metal roofing?

Yes he said it would be a galvalume 26 gauge and that would be the 12 in. wide ones. 5/8 plywood will be installed behind it also. I hope this will be a sturdy roof, and i am also concerned about the oil canning. I appreciate the input guys. Wes

5v crimp metal roofing?

Quote:

Originally Posted by wkraft

I am talking to a roofing contractor about putting a metal roof on my house. He is talking about the 5v crimp. Can anyone give me some info on this stuff, it seems it only comes in 26 gauge and 12in. on center for the panels. Im afraid with my research that could lead to what they call oil canning where the metal starts to warp in spots and i surely dont want.Also i live on the florida coast and want the best bang for my buck especially being in hurricane territory i need something strong.

A lot of The older homes in Tampa from the Cigar factory days have 5 v crimp metal roofs. Thats the 1920's. The ones that were painted after the galvanizing wore off are still here. The new metal is more durable. My father put a 28 gauge one on his house on the bay and the salt got it in about ten years. We replaced it with heavier gauge metal and it was still there the last I looked. I believe it comes in 24 gauge.